Closing the connection compartment / connection duct
184 NXAIR / ≤ 40 kA 110-0084.9 / 15
Preconditions
• Feeder earthing switch in CLOSED position
• High-voltage door open
• Low-voltage connector stowed away
• Unit consisting of ventilation duct and vertical partition available. Associated connecting elements
available:
• 13 bolts M8x20 with contact washers and plain washers size 8 acc. to ISO 7093
• 7 bolts M8x20 with contact washers
• Protection plate and associated bolting material available:
• 4 nuts M8 with contact washers
• Front part of ventilation duct and associated bolting material available:
• 8 bolts M8x20 with contact washers
Procedure
Place the unit consisting of ventilation duct (1) and vertical partition (2) centrally on the panel
base frame. The vertical partition must point towards the connection compartment.
Push the unit towards the connection compartment as far as it will go.
Fix the unit by screwing the bolts hand-tight:
• 13 bolts M8x20 with contact washers and plain washers size 8
acc. to ISO 7093 (3)
• 7 bolts M8x20 with contact washers (4)
Fig. 267: Ventilation duct and partition,
seen from center-right
Fig. 268: Ventilation duct and partition,
seen from center-left
Tighten the fixing bolts all around with a tightening torque 25 Nm.
Install the protection plate (5).
Fix the protection plate (5) by screwing the nuts (6) hand-tight.
• 4 nuts M8 with contact washers
Tighten the fixing nuts with a tightening torque 25 Nm.
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